Effect of Structure on the Deformation/Failure
at ORAU Workforce Solutions

Date Posted: 4/23/2019

Opportunity Description

Effect of Structure on the Deformation/Failure Behavior of Materials under High Rates of Loading Research focuses on understanding the effect of micro- and sub-structures on the deformation and failure behavior of materials at different strain-rates of loading, including high strain rates. Materials that are being studied include metallic alloys, ceramics, soft and hard polymers, and composites. The effect of stress state on the failure behavior and failure mechanisms at high rates of loading is also being investigated. We are especially interested in the relationship between structure and the failure that results from tensile and shear instability at high rates. Tools being used for high-rate investigations include compression, tension, and torsion Hopkinson bars. Experimental facilities also include Hopkinson bars that are designed for low-impedance soft material testing. High speed photography (100 million frames per second) and digital image correlation techniques are also used to understand the deformation and failure process during experiments. Optical/electron microscopes are used for pre- and post-mortem analysis of recovered with a known stress-strain history to relate the deformation and failure process/mechanisms to stress-state history.

Opportunity Snapshot

About Us

Grooming future leaders in science and technology requires enhancing the skills, knowledge and experience of workers early in their careers. To that end, ORAU (Oak Ridge Associated Universities) assists in connecting the best and most diverse students, recent graduates, faculty and professionals with world-class fellowships, internships and jobs, whether in national laboratories, research institutions, federal government offices or private sector R&D departments.

ORAU works with agencies such as the U.S. Army Research Laboratory (ARL) Research Associateship Program (RAP) allow Postdoctoral Fellows, Journeyman Fellows (undergraduate and graduates students and recent graduates), Senior Researchers, and Summer Faculty engage in research initiatives of their own choice, that are compatible with the interests of the government and will potentially contribute to the general effort of the ARL. We work with the Environmental Protection Agency (EPA) to place recent graduates in full-time and part-time jobs in the Office of Research and Development at EPA under the National Student Services Contract. ORAU also works with Center for Medicare and Medicaid Innovation.

Research opportunities include, but are not limited to the following disciplines: Aerospace Engineering, Anthropology, Archeology, Biology, Biochemistry, Biological Engineering, Biomechanical Engineering, Biomedical Engineering, Chemical Engineering, Chemistry, Computer Science, Computer Engineering, Data Science, Electrical Engineering, Environmental Health Risk Assessment, Environmental Science, Entomology, Epidemiology, Ergonomics, Geology, Health Education Mechanical Engineering, Materials Science, Mathematics, Nanotechnology, Photonics, Physics, Public Health Economics, Public Health Policy, Toxicology, and more.

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